where is blackfathom deeps ?

(posting this almost 9 months later to help anyone new to WoW who reads this)

Black Fathoms Deep is located in the Zoran Strand, which in turn is found along the western coast of Ashenvale.

For humans, dwarves & gnomes, travel to Menethil Harbor to catch a boat ride to the elven town of Auberdine there are two boats that leave the harbor, so take the one that arrives at the right pier as you face the water. For elves, merely take the one boat that arrives at the pier located just outside Darnassus. From Auberdine, travel the road south out of Auberdine, after several minutes you'll receive a message indicating that you entered Ashenvale. Look for the road to diverge, one path heading SW (to the Zoran Strand), the other continuing south...if for some reason you reach Maestra's Post, distinguished by a inn-style building and a tower, simply head directly west from there until you reach the beach of the Zoran Strand.

The entrance to Black Fathoms Deep is found somewhere amongst the Roman columns of the ruins found on the northwestern area of the beach. I've been down there twice but both times I had knocked a couple back and wasn't exactly a vacuum for details.

Weapon repair, general & trade supplies can be found just east past Maestra's Post in the elven town of Astranaar there is also a flight station there.